/Engine/Source/Runtime/Engine/Classes/Camera/CameraTypes.h
Calculates the projection matrix (and potentially a constrained view rectangle) given aFMinimalViewInfoand partially configured projection data (must have the view rect already set)
static void CalculateProjectionMatrixGivenView ( const [FMinimalViewInfo](API\Runtime\Engine\Camera\FMinimalViewInfo) & ViewInfo, [TEnumAsByte](API\Runtime\Core\Containers\TEnumAsByte)< enum EAspectRatioAxisConstraint > AspectRatioAxisConstraint, class [FViewport](API\Runtime\Engine\FViewport) * Viewport, struct [FSceneViewProjectionData](API\Runtime\Engine\FSceneViewProjectionData) & InOutProjectionData )